A bank developed a model for predicting the aver-age checking and savings account balance as balance = - 17,732 + 367 * age + 1,300 * years ­education + 0.116 * household wealth.

a. Explain how to interpret the numbers in this model.

b. Suppose that a customer is 32 years old, is a college graduate (so that years education = 16), and has a household wealth of $ 150,000. What is the predicted bank balance?